The chandra x-ray observatory has detected x rays from a star system that contains a main-sequence star of spectral type b6. the x-ray emission is strong and fairly steady, and no sudden bursts have been observed. which of the following statements are reasonable conclusions about this system?
a) the main-sequence star orbits either a white dwarf or a neutron star.
b) the main-sequence star orbits either a neutron star or a black hole.
c) the main-sequence star must orbit a white dwarf.
d) the main-sequence star is emitting x rays.
e) gas from the main-sequence star makes an accretion disk around another object.
f) the main-sequence star must orbit a black hole.
g) some time in the next few decades, this system will undergo a nova explosion.
h) the main-sequence star must orbit a neutron star.
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The chandra x-ray observatory has detected x rays from a star system that contains a main-sequence s...
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